<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
 <head>
  <title>test reference</title>
  <style type="text/css">
   #test, #control { color: blue; font-weight: bold; border: solid silver thick; letter-spacing: 7em; }
  </style>
 </head>
 <body>
  <p>The contents of the two silver boxes must be identical.</p>
  <p id="control">ab cd ef gh i j</p>
  <p id="test">ab cd ef gh i j</p>
 </body>
</html>
